Public Design Bureau

SKI OR CATAMARAN?

05.06.201813.05.2018Design

The boats, which we would like to introduce to the readers, it can be attributed to the category of small vessels. And how else to call a couple of universal self-propelled floats, which are easy to use and as gidroliz, and double pleasure catamaran. As can be seen from the drawings, each of the floats is a miniature boat with a power unit including battery, motor and propeller. Displacement of one float is about 140 kg, which allows not only to equip its power plant, but also allows for “skier” when you need to rely only on a single float, not fearing that he will go under water.

MINI-JEEP: PULL, NOT PUSH!

05.06.201813.05.2018Design

The vehicles of the “jeep” has always attracted Amateur by automakers its pronounced functionality: as they say, a jeep is a machine “advantage.” And, of course, the plainness of the external forms and the complete absence of surfaces with double curvature — and therefore, easy manufacturing of the body from any sheet material, ample inner space. In short, the machine with the appearance of the jeep will always be preferable for those who starts creating his very first vehicle. It was decided to develop a car like the jeep. However, the portrayal of the machine was that the plainness of its external forms is only apparent, and create a truly original body is very, very difficult. All of my “designer” refinements led eventually to the appearance of the paper machine is clearly artisanal. In the end had to turn to classical models by taking as a basis the famous “jeep” of the forties. In fact, I do, in General, a layman in design, to compete with the professionals who created a kind of reference appearance of this vehicle.

FROM FLASHLIGHT INTO A FLOAT

05.06.201813.05.2018Small-scale mechanization

Many are addicted to fishing for them this activity is a fascinating vacation. The very same UDA, rod, adise is one of the oldest fishing gear; by definition of V. I. dal’s dictionary, it is “spun horsehair forests, with one (or more) hook, which is sometimes linked to special powada; hook is attached above the sinker, above, depending on the depth, the float, the upper end attached to the rod, the shaky stick”. However, progress is inexorable. To replace the forest horsehair came nylon fishing line, floats of nylon and become electrified. Improving manual fishing gears and devoted this article.

ON THE “TRAMP” – IN CYCLING

05.06.201813.05.2018Design

Our family vehicle — a three-wheeled velotandem “the Vagabond” — designed by me for tours. From the same konstruktsii it is distinguished by the absence of any irreversible modifications to the basic bike on the basis of which created velotandem; ease of fabrication of additional parts and components which couple to the standard model turns into a three-wheeled trailer, as well as high reliability “Tramp” tested tough operation on the roads of Russia.

Like all tandems, our also has a smaller in comparison with a pair of conventional bicycles CX — the drag coefficient and, as a consequence, a lower sensitivity to the counter air flow. All of this allows easily for 4…5 hours to maintain a cruising speed of about 20 km/h (7 km/h uphill and 80 km/h on Sunnah). To resume movement, as experience has shown, it only takes two or three hours of rest, although the crew does not have high athletic qualities.

UNIQUE ROCKING

05.06.201813.05.2018World of models

One of the most important components of the control system with cord model airplane rocking chair that serves as the connecting link between the cord strands and rods for the rudders. Structures of these nodes knows a lot. But, in fact, all of them are divided only into two groups — classic rocking and disk. Both traditional schemes has its own inherent flaws. Thus, the conventional rocking chair in connection with a change in angle relative to the direction of cords in its turn has a variable gear ratio. In addition, this system takes a lot of space in the model, and at large the required control effort, the scope of the rocking becomes so significant that the node weight begins prison the cable that connects the two kordovye threads, thrown through the simple pulley, the diameter of which is limited only by the flexibility of the cable used. The rope on the pulley is not fixed and can therefore drag-and-dropped in the model for the entire length on both sides. One arm cable half-ring is attached to the sealing, which holds one of the levers easy simple politically. If you carefully consider the principle of operation of the new system, it will be clear that the selection of parameters politically fails to provide any parameters of the control system as a whole. It seems that unique rocking chair has no weaknesses.

Start over

05.06.201813.05.2018World of models

Easy to fly model aircraft. I want to offer young readers with “M-K” unpretentious three models, the design of which worked at the Center for Children’s technical creativity of the city Staraya Russa, where I work as the head of the model aircraft association. Drawings and diagrams allow a few hours to make good flying models, using quite affordable materials and simple tools. An important advantage of the proposed designs is that they can be run not only outdoors, but also indoors – in a school gym or in the hallway.

DEL’TALET NEW GENERATION

05.06.201813.05.2018Design

This small aircraft drew more attention to themselves at the Tushino international salon in June 1995. It differed from other such somewhat unusual layout. In conversation with its creators revealed that this design decision was made as a result of deep theoretical and experimental work conducted by the authors in the field of aerodynamic interaction of the wing and the propeller trikes. Learn more about your child we asked one of the designers of the project “Comet” and the pilot S. Sitdikova.

IN THE AIR – “CORAL FISH”

05.06.201813.05.2018World of models

PAINTING OF AIRCRAFT CARRIER-BASED AIRCRAFT

Military aircraft painting aircraft have always played an important role. After all, well-chosen color camouflage reduce the visibility of the machine in the air and thus increase its survivability. A variety of colors and color schemes were determined by the nature of the environment, against which were combat flight. As well as carrier-based aircraft mainly operates over the sea, the defining colors in the palette of camouflage are the various shades that mimic the color of the water surface.

“TOROS-1”: LAND, AND WATER

05.06.201813.05.2018Design

Vehicle air cushion (TSVP) is widespread abroad and in our country. Lately, the most popular is light vehicles, air cushion used as a private vehicle in areas with high water cuts and the lack of paved roads. It is the Northern regions of the European part of our country, Siberia and the Far East. The growing interest in such technology can be judged by the number of letters received over the last few years in our editorial office with requests to tell more about these devices. Responding to the wishes of our readers, we publish material about TSIT “Toros-1” developed by the Nizhny Novgorod group of designers under the leadership of V. Moiseev and Sergei Prikhodko. In the design and construction of the first production vehicles “Toros-1” took an active part Petrushev, Yuri, Mikhail Gorbachev, and Kostyunin, Yu, D. Dolgov and Y. Balymov.

“COMPACT -800” MOTOR FOR ALS

05.06.201813.05.2018World of models

Numerous rallies of Amateur aircraft collected hundreds of enthusiasts, small aircraft, and it clearly showed that the interest in the design of Amateur aircraft huge. However, in many cases an unsolvable problem for fans of the SLA is the issue of motor—powerful, light, compact and economical. I believe that if the industry produced similar engines, small aircraft in Russia would have developed much more rapidly. In the meantime, the only way to saadeldin remains the manufacture of such a motor with his own hands.